class A
{
public:
	A()
		: _a(0)
		, _b(0)
	{}
	A(int n)
		:_a(n)
		, _b(n)
	{}
private:
	int _a;
	int _b;
};

class B
{
private:
	A _aa;
	char c;
public:
	B()
		:_aa(10)
	{
		A();
		c = 'o';
	}
};

int main()
{
	B bb;
	return 0;
}